According to ‘answers.microsoft.com’, the connection can be set to metered using the cmd window. Type cmd into the Search box, then type or copy paste this into it:
netsh wlan set profileparameter name=”TheSSIDOfTheWiFiConnectionToBeAltered” cost=fixed
(using the name of your wifi connection).
To change it back, change cost=fixed to cost=unrestricted
To see what the setting is before and/or after, type or copy paste this:
netsh wlan show profile name=”TheSSIDOfTheWiFiConnectionToBeAltered”
Look at ‘Cost Settings – Cost’